I have three swollen lymph nodes on my left inner thigh. They have been there april of 2011. I have chest pain and get sick about 4 times a month?

Get a check up ! Do you have fever, sweats , weight loss, itching? Other symptoms or history? You need a good exam, lab tests, chest x-ray and possibly other tests . Soon.
What else. The enlarged nodes may follow an infection, surgery, or trauma to the leg. Most shrink over time just like in the neck etc. Persistent enlarged nodes need evaluation. Any others? Where?